Atomics - syclreference.com

Type	Definition	Notes
`atomic_float`	atomic<cl::sycl::cl_float>	atomic float object with default global address space
`atomic_int`	atomic<cl::sycl::cl_int>	atomic int object with default global address space
`atomic_uint`	atomic<cl::sycl::cl_uint>	atomic unsigned int object with default global address space

Only relaxed memory order is supported in SYCL 1.2.1

atomic<T, addressSpace>	Implementation of the SYCL atomic class according to 1.2 spec. (section 3.8). On host, calls C++ atomic functions on an std::atomic; on device uses SPIR-mangled OpenCL 1.2 functions to achieve same result.
device_type<elemT, addressSpace>
get_atomic_address_space<access::target::local>	Retrieves the address space, suitable for use in an atomic, from the access::target::local access target
get_atomic_address_space<accessTarget>	Retrieves the address space, suitable for use in an atomic, from the access target.

atomic_compare_exchange_strong	Global function atomic_compare_exchange. Calls compare_exchange on SYCL atomic object.
atomic_exchange	Global function atomic_exchange. Calls exchange on SYCL atomic object.
atomic_fetch_add	Global function atomic_add. Calls add on SYCL atomic object.
atomic_fetch_and	Global function atomic_and. Calls and on SYCL atomic object.
atomic_fetch_max	Global function atomic_max. Calculates max(object, operand), storing the result in object.
atomic_fetch_min	Global function atomic_min. Calculates min(object, operand), storing the result in object.
atomic_fetch_or	Global function atomic_or. Calls or on SYCL atomic object.
atomic_fetch_sub	Global function atomic_sub. Calls sub on SYCL atomic object.
atomic_fetch_xor	Global function atomic_xor. Calls xor on SYCL atomic object.
atomic_load	Returns *object
atomic_store	Global function atomic_store. Calls store on SYCL atomic object.